@misc{misc, title  = {{Challenges in the design, planning and implementation of trials evaluating group interventions}},

 url = {{http://eprints.whiterose.ac.uk/153330/ }},

 year = {{2019}},

 month = {{10}},

 author = {{Biggs K and Hind D and Gossage-Worrall R and Sprange K and White D and Wright J and Chatters R and Berry K and Papaioannou D and Bradburn M and Walters SJ et al}},

 note = {{Accessed on 2024/09/20}}}